Internal-combustion engine



S ept. 2. 1924. 1,506,921

J. A. DIRIENZO INTERNAL COMBUSTION ENGINE v Filqd March 25 192 2 Sheets-Sheet 1 1,506,921. J. A. DIRIENZO INTERNAL COMBUSTION ENGINE Filed March 25, 1922 2 Shgets Sheet 2 2mm A.D-i. :ienzn Ma ne's Patented Sept. 2, 1924,

UNITED STATES PATENT OFFICE.

JOHN A. DIRIENZO, F MADISON, WISCONSIN.

INTERNAL-GOIYIBUSTIOIV ENGINE. I 1.,f

Application filed March 25, 1922 Serial No. 546,838.

To all whom it may concern:

Be it known that I, JOHN A. DIRIENZO, a citizen of the United States, residing at Madison, in the county of Dane and State of Wisconsin, have invented certain new and plurality of cylinderscomprising a valve body usually formed integrally with the engine and embodying an elongated bore and a pair of expansible cylinders reciprocable within the valve body and having openings. alignable with openings formed in the valvebody. Heretofore in valves in which reciprocating cylinders have been employed the cylinders have been of rigid construction and have accordingly become warped and worn. in use and permit leakage. This is due to the fact that in the construction of these valves the intake and exhaust valves.

have been combined in a single structure necessitating partition walls upon the inner cylinder which rigidify the same and prevent proper expansion thereof.

An important object of thisinvention is to provide a valve cylinder for valves of the type set forth which are longitudinally slotted and formed of a suitable resilient:

material so that they may be expanded against a similar cylinder or against the walls of the valve bore.

A still further object ofthe invention is to provide an operating mechanism. for valve structures of this character. a

An additional object ofthe invention is the provision of a valve of-this character which will be very simple andrinexpensive in construction, easy to ad u'st and ma ntain in adjustment, strong and durable in serv-,

ice and a general improvement in the. art{ These and-other objects I attainby the construction andvarrangement shown in the accompanyingdrawings wherein for the, purpose ofillustratlon is shown a preferred ent of my invention and wherein like reference characters designate like parts throughout.

In the drawings:

Figure 1 is a longitudinal sectional view taken through an internal combustion en-j gine embodying valve gearing constructed in accordance withmy invention; V Figure 2 #is a transverse sectional view taken therethrough; Figure "3 is a fragmentary-plan view showing the drive for'the sleeve valves Figure 4'is atop plan viewfof the valve member; I

Figure 5 is a sectional view showing a different manner of forming the slot Figure 6 isa detail longitudinal sectional view showing the manner of attaching the head to the outer cylinders; and v I Figure 7 is a transverse sectional View thereof.

Referring ..now more particularly to the drawings, the numeral 10 designates an en-'' gine, ll the head thereof, 12, 12 12 and 12 cylinders and 13,13, 13 and 13 the pistons. I i

The head .11. is provided'with longitudinal bores 14. and 15 forming 'a gas intake 7 chamber and gas exhaust chamber respectively, each of these chambers havingan outlet 15 whereby it may be-connectedwith the carbureter or exhaustv pipe as the case may be. The head is provided with openings '16 communicating with each of thecylinders 12, 12*, 12 and12 and each of these openingshas 'a branch 17 communi cating withv the chamber 15 or exhaust with the chamber 14, or inlet branch.

Disposed within each chamber 14 and 15 hers 19- and 20 respectlvely. The, construction and arrangementof the sleeve members :in each of the chambers 14 and 15 be ing similar, the description of one will here-. in suifi -j ,i. I The outer sleeve 19 is provided-with o enings 2lfco acting with the correspon ing branch 17 or 18 of the openings 16 commu 'nicating with the cylinden the openings corresponding in number to the number of cylinders of the engine. The inner expansible sleeve or cylinder :20 is provided with openings 22' which "are alignable with the branch, and a branch 18 communicating- 9 are outer and inner expansible sleeve mema tight seal.

openings 21 of the sleeve 19. By reciprocating these sleeves the openings 22 and 21 of the sleeves 20 and 19 may be aligned with a given cylinder opening 16 to permit the entrance of a fuel charge or the exhaust of burnt gases, as the case maybe.

Each of the sleeves 19 and 20 is longitudinally slotted, as indicated at 23. This slot may be either a zigzag slot, such as illustrated in Figure 4, or a slot having lapped edges, such as indicated at 24 in Figure 5. The peculiar construction of the slot is, however of small moment provided that it permits of circumferential expansion of the sleeve after the manner of a piston ring in a piston so that the walls of the sleeve are in firm. engagement with the wall of the chamber or with the inner wall of the as sociated sleeve, as the case may be. It is here pointed out'that by providing separate ex haust and intake valves the sleeves may be formed of suitable material for each of these purposes. For example, the sleeves of the intake chamber may be formed of steel and not being subjected to the intense heat will maintain their temper sufliciently to afford The sleeves of the exhaust chamber, however, should be formed of cast '11011 or some other material which will retain its resiliency when subjected to a great degree of heat. The outer surface of each of the sleeves 19 and 20 may be provided with grooves 25 affording recesses for the accumulation of oil for lubricating the sleeves at desired points, ndparticular arrangement of these grooves being specified with the exception that it is necessary that they are not arranged so that they overlap the opening 16 of the cylinder or the openings of the associated sleeve so as to interfere with proper compression or expansion of the gases in the cylinder and that thev terminate short of the slot of the sleeve.

3 The operating ends of the sleeves 19 and 20 project beyond one end of the chambers and are provided with heads 26 and 27 respectively. The heads 26 and 27 are secured As in each instance the threaded engagement 'ofthe" heads with the sleeves is necessarily an enlarged portion 29intera loose one to permit of expansion, pins 30 are'provlded for preventing relative rotation'of the heads and sleeves. The inner posed between its extension 27 and the head 27 proper against which the end of the sleeve 20 abuts, thereby forming a joint preventing the escape of gases longitudinally of the sleeve. p

The head 26 is provided with an opening coinciding with an enlarged or recessed portion- 23 of the slot through which a sealing member 23 may be directed for engagement sleeve 19 operates within an enlarged recess portion 40 of the bore 14 and is provided with a head 41 similar to the head 26, this head having a bore 42 slightly larger than the end of the sleeve 19. 43 engages in the slot of the sleeve and is The heads 26 and 27 are A plug or wedge;

held in such position by means of a screw plug 44 and spring 45. The head is secured in position by means of a securing element 46. Attention is directed to the fact that the engagement of the plugs 23 and 4311015 onlytends to seal the ends of the longitudinal slot of the sleeve but likewise main tains this sleeve in expanded position, pre venting collapsing or closing of the slot thereof due to the pressure of explosion in any of the cylinders which would tend to decrease the diameter of the outer sleeve and permit escape of the gases of the explosion from one cylinder to another. 2

The numeral. 33 designates a horizontal shaft disposed transversely of the endof the cylinder at which the heads 26 and 27 are disposed and which is supported by'suitable brackets 34 secured to the engine. This shaft is driven by a drive member 35 re ceiving its power from the crank shaft of the engine and embodies cranks36 and 3? Corn nected with the arms 31 and 32, respectively, by connecting rods 38 and 39 engaged with the cranks and with the pivots carried by the arms. It will be seen that upon rotation of the shaft 33 the sleeves 19 and 20 will be independently reciprocated and because thereof will have these openings aligned with one another and with the corresponding opening 16 of the cylinder at every second revolution of the crankshaft, the shaft of the peculiar arrangement the openings;

33 being driven at one-half the speed of the:

crank shaft. The arrangement of openings shown admits fuel to the cylinders and completely seals each cylinder after the.

sion of gas is completed until the charge has been compressed, fired and exhausted. However, the arrangement shown need not be adhered to,any arrangement accomplishing this result being used.

From the foregoinglit is believed to be obvious that control valves of the type disclosed herein are particularly well adapted for the use for which they are intended in that they provide against ordinary wear by their expansibility, are light and cheap in construction and may be readily replaced. It will furthermore be obvious that the construction as hereinbefore set forth is capable of some change and modification without materially departing from the spirit of my invention and I accordingly do not limit myself to the specific structure thereof except as hereinafter claimed.

I claim: I

1. A valve member formed as a tubular body having a slot therein, a head surrounding one end of the body, a securing element carried by the head and engaging the body,

and a spring pressed wedge carried by the head and engaging within said slot for effooting sealing thereof.

2. A valve element comprising an elongated tubular body formed with a slot, a ring like head disposed upon one end of the body, a securing member passing through said head and engaging in the body at a point opposite the slot, the opposite point on the head being formed with an opening, a wedge plug engaged within said slot and slidable within said opening, a spring within the opening engaging the plug, and an adjustable abutment for'the outer end of the spring.

3. A valve element formed as an elongated tubular body having one end formed with a slot, a ring like head loosely engaged upon said end, a through the head and into the body at a point diametrically opposite said slot, the opposite point of the head being formed with an opening, a tapered plug slidable within said opening and engaged within said slot, a spring within the opening engaging the plug, and a screw member threaded into the opening for regulating the tension of the sprin 1 I 1 4. A valve element formed of telescopi cally engaged tubular sections formed with securing member passing slots, a head screwed into the inner section, f

a head of sleeve like formation surrounding said first named head and having loose threaded engagement exteriorly upon thethe outer section.

5. A valve element formed as an elongated tubular body having a slot, therein, a ring.

like head having a loose thread connection upon the outside of said'body, the loose, fitting of the threads permitting expansion of the body, and wedge means carried by the .head and fitting Within'the slot for sealing the same.

' 6. A valve element comprising a ported cylinder formed of resilient material and slotted from end to end, a head engaging one end ofsaid' cylinder, and sealing elements disposed within said slot and maintained in position by said head.

In an engine having a bore communi eating with its cylinders. through ports, a

valve mounted within said bore and formed of telescopically engaged sections, the outer section having one end externally threaded and the inner section having the same end internally threaded, ahead loosely engaged upon the threaded end of the outersection, 5 v p and a head having a threaded extension loosely engaged within the threaded end of the inner section, the sections being expansible and the loose fitting of the threads permitting expansion.

8. In an engine having a borecommunieating with its cylinders through ports, a valve mounted within said bore and having ports adapted to be brought into registration with the first namedxports, said valve being expansible and having one end exter nally threaded and slotted, a head loosely screwed onto said threaded end, the loose ness of the threading permitting expansion of the valve, means for preventing relative rotation of the valve and head, and a spring pressed wedge plugeXtending into and sealing said slot. 7 v

In testimony whereof I hereunto affix my signature. 7

JOHN anininnzo.

6d second named head for sealing the slot in e 

